import { EventEmitter, InjectionToken } from '@angular/core';
import { FlattenTranslation, Translation, TranslationEntries } from './translate.model';
import * as i0 from "@angular/core";
export declare const PA_LANG: InjectionToken<string>;
export declare const PA_TRANSLATIONS: InjectionToken<Translation>;
export interface TranslationChangeEvent {
    translations: any;
    lang: string;
}
export declare class TranslateService {
    private injectedLang;
    private translations;
    private _currentLang;
    private readonly _flattenTranslations;
    private _onTranslationChange;
    defaultLang: string;
    get onTranslationChange(): EventEmitter<TranslationChangeEvent>;
    get flattenTranslations(): FlattenTranslation;
    set currentLang(language: string);
    get currentLang(): string;
    /**
     * Keeping for backward compatibility
     * @param language
     */
    set currentLanguage(language: string);
    get currentLanguage(): string;
    constructor(injectedLang: any, translations: Translation);
    initTranslationsAndUse(lang: string, translation: TranslationEntries): void;
    use(lang: string): void;
    getValue(key: string, args?: any): string;
    static ɵfac: i0.ɵɵFactoryDeclaration<TranslateService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<TranslateService>;
}